Current Expected Credit Losses ("CECL") - Delinquency Status of Receivables (Details) $ in Millions	Mar. 31, 2022 USD ($)
Financing Receivable, Past Due [Line Items]
Financing receivables	$ 70.9
Current
Financing Receivable, Past Due [Line Items]
Financing receivables	69.3
30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.1
60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	1.5
Notes receivable, short-term
Financing Receivable, Past Due [Line Items]
Financing receivables	6.1
Notes receivable, short-term | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	4.5
Notes receivable, short-term | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.1
Notes receivable, short-term | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, short-term | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, short-term | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	1.5
Notes receivable, long-term
Financing Receivable, Past Due [Line Items]
Financing receivables	12.7
Notes receivable, long-term | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	12.7
Notes receivable, long-term | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, long-term | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, long-term | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Notes receivable, long-term | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables
Financing Receivable, Past Due [Line Items]
Financing receivables	17.7
Lease Receivables | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	17.7
Lease Receivables | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Lease Receivables | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Notes
Financing Receivable, Past Due [Line Items]
Financing receivables	31.8
Equipment Notes | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	31.8
Equipment Notes | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Notes | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Notes | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Equipment Notes | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other
Financing Receivable, Past Due [Line Items]
Financing receivables	2.6
Other | Current
Financing Receivable, Past Due [Line Items]
Financing receivables	2.6
Other | 30-59 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other | 60-89 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other | 90-119 days
Financing Receivable, Past Due [Line Items]
Financing receivables	0.0
Other | 120+ days
Financing Receivable, Past Due [Line Items]
Financing receivables	$ 0.0